Survey Identifier: MARA09WT
Format Acronym: MGD77
Data Center File Number: 15040102
Parameters Surveyed Code: 55333
File Creation Date (yyyymmdd): 19811007
Source Institution: SCRIPPS INSTITUTION OF OCEANOGRAPHY
Country: USA
Platform Name: R/V THOMAS WASHINGTON
Platform Type Code: 1
Platform Type: SHIP
Chief Scientist(s): SILVER E.
Project: MARIANA LEG 9 <NSF OCE78-086937>
Survey Departure Date (yyyymmdd): 19790104
Port of Departure: GUAM
Survey Arrival Date (yyyymmdd): 19790210
Port of Arrival: JARKARTA
Navigation Instrumentation: SATNAV,AUTO LOG GYRO+2D DOPPLER SPD LOG
Geodetic Datum/Position: LINEAR INTERP.BETWEEN ADJACENT FIXES
Bathymetry Instrumentation: 3.5KHZ/RAYTHEON UGR RECORDER/WIDE BEAM
Additional Forms of Bathymetric Data: ANAL.RECORDS,CARDS,35MMFILM
Magnetics Instrumentation: VARIAN MFD PROTON PRECESSION MOD 4970
Additional Forms of Magnetics Data: ANAL.RECORDS,CARDS,35MMFILM
Gravity Instrumentation: ASKANIA GSS2,ANSCHUTZ ELECT. GYRO TABLE
Additional Forms of Gravity Data: ANALOGUE RECORDS
Seismic Instrumentation: 24CHANNEL,40-300CU.IN.AG,GEOSPACE DAS209
Formats of Seismic Data: ANAL.REC,35MM FILM,DIGITAL MAG. TAPE
Topmost Latitude of Survey: +14
Bottommost Latitude: -09
Leftmost Longitude: +107
Rightmost Longitude: +145
General Digitizing Rate of Bathymetry: 050
General Sampling Rate of Bathymetry: 1SECONDSWEEP
Assumed Sound Velocity: 14630
Bathymetric Datum Code: 00
Interpolation Scheme: 5 MINUTE INTERVAL
General Digitizing Rate of Magnetics: 050
General Sampling Rate of Magnetics: 06
Reference Field Code: 04
Reference Field: IGRF 1975
Method of Applying Residual Field: LIN. INTERP.POINTS WITHIN ONE DEGREE SQUARE
Number of Data Records: 10823
Min/Max Data Record:
Date: 1979 01 04
Latitude: -8.19550
Longitude: +107.49041
Bathymetry, 2- Way Traveltime: 000500
Bathymetry, Corrected Depth: 38.0
Magnetics Total Field, 1st Sensor: 366600
Magnetics Residual Field: -03390
Min/Max Data Record:
Date: 1979 02 10
Latitude: +13.48870
Longitude: +144.66060
Bathymetry, 2- Way Traveltime: 115200
Bathymetry, Corrected Depth: 8849.0
Magnetics Total Field, 1st Sensor: 450790
Magnetics Residual Field: +07770